DL 939 then DL 496 at JFK
Los Angeles → New York → Dallas-Fort Worth
Timetable, New York time
20:59DL 939 from Los Angeles at the gate
17:45DL 496 to Dallas-Fort Worth leaves the gate
20 h 46 apart on the timetable, overnight
DL 496 leaves 20 h 46 after DL 939 arrives on the timetable: more than half a day, so not a connection we count.